Jane Muthoni Mara said she felt "completely and utterly violated" after sexual torture.
She is demanding compensation for her suffering.
Jane said: "I want the British citizens of today to know what their forefathers did to me and to so many others. These crimes cannot go unpunished and forgotten."
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The elderly woman's son complained to the council that his mother had been deprived of her liberty in an 'unprecedented' legal case.